cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A381001 Georges Pfeffermann's 1890 bimagic square of order 8, read by rows.

Original entry on oeis.org

56, 34, 8, 57, 18, 47, 9, 31, 33, 20, 54, 48, 7, 29, 59, 10, 26, 43, 13, 23, 64, 38, 4, 49, 19, 5, 35, 30, 53, 12, 46, 60, 15, 25, 63, 2, 41, 24, 50, 40, 6, 55, 17, 11, 36, 58, 32, 45, 61, 16, 42, 52, 27, 1, 39, 22, 44, 62, 28, 37, 14, 51, 21, 3
Offset: 1

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Author

Paolo Xausa, Feb 13 2025

Keywords

Comments

This is the first known bimagic square. It contains all numbers from 1 to 64; the magic sum is 260 and, when each number is squared, the magic sum is 11180.

Examples

			The magic square is:
  [56 34  8 57 18 47  9 31]
  [33 20 54 48  7 29 59 10]
  [26 43 13 23 64 38  4 49]
  [19  5 35 30 53 12 46 60]
  [15 25 63  2 41 24 50 40]
  [ 6 55 17 11 36 58 32 45]
  [61 16 42 52 27  1 39 22]
  [44 62 28 37 14 51 21  3]
		

Crossrefs

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